A chemiresistive-potentiometric multivariate sensor for discriminative gas detection
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DOI number:10.1038/s41467-023-39213-x
Journal:Nature Communications
Abstract:Highly efficient gas sensors able to detect and identify hazardous gases are crucial for numerous applications. Array of conventional single-output sensors is currently limited by problems including drift, large size, and high cost. Here, we report a sensor with multiple chemiresistive and potentiometric outputs for discriminative gas detection. Such sensor is applicable to a wide range of semiconducting electrodes and solid electrolytes, which allows to tailor and optimize the sensing pattern by tuning the material combination and conditions. The sensor performance is boosted by equipping a mixed-conducting perovskite electrode with reverse potentiometric polarity. A conceptual sensor with dual sensitive electrodes achieves superior three-dimensional (sub)ppm sensing and discrimination of humidity and seven hazardous gases (2-Ethylhexanol, ethanol, acetone, toluene, ammonia, carbon monoxide, and nitrogen dioxide), and enables accurate and early warning of fire hazards. Our findings offer possibilities to design simple, compact, inexpensive, and highly efficient multivariate gas sensors.
Indexed by:Journal paper
Volume:14
Page Number:3495
Translation or Not:no
Date of Publication:2023-06-13
Links to published journals:https://rdcu.be/deqyT
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A chemiresistive potentiometric multivariate sensor 14 2023 3495 Nat Commun.pdf
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